21700 Battery Cells

21700 Battery Cells are advanced cylindrical rechargeable lithium batteries
designed to deliver higher energy density, longer runtime, and improved thermal
performance compared with traditional formats. With a diameter of 21mm and
length of 70mm, 21700 cells strike an optimal balance between capacity, power
output, and safety, making them one of the most popular choices for modern
industrial, commercial, and energy storage applications.
Core Competitive Advantages
1. Capacity and density both increase, reducing assembly costs
Single-cell capacity 3000-5000mAh, approximately 30%-50% higher than 18650,
with the same system reducing the number of cells by 20%-30% and simplifying
the PACK design, lowering BMS and structural component costs.Energy density
180-260Wh/kg, supporting 2C-11C fast charging and high-current discharge. The
lithium-ion system can sustain discharge at 25-50A, and the lithium iron
phosphate has a cycle life of ≥3000 times (80% DOD). The terminal replacement
frequency is significantly reduced.

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